TTT - EasyEDA open source hardware lab

Std edition TTT

Profile：Thermoelectric Tea Timer

License: MIT

Published Time: 2022-07-24 21:09:29

Description

An energy autonomous system, integrated or attached to a cup, capable of measuring temperature and notify wirelessly after tea infusion timeout

Design Drawing

schematic diagram

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PCB

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Empty

BOM

ID	Name	Designator	Footprint	Quantity
1	2450AT18A100E	AE1	ANT-SMD_L3.2-W1.6	1
2	0.1uF	C1,C5,C8	0603	3
3	12pF	C2,C3	0603	2
4	10uF	C4	0603	1
5	1.2pF	C12,C13	0402	2
6	1nH	L2	L0402	1
7	Header-Female-2.54_1x6	P9	HDR-6X1/2.54	1
8	MMSS8050-H-TP	Q2	SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR	1
9	10k	R7	R0402	1
10	10k	R74	0603	1
11	LMT84DCKR_C527482	U1	SC-70-5_L2.1-W1.3-P0.65-LS2.1-BL	1
12	IN100-D1-R-RC0I	U3	DFN-8_L2.5-W2.5-P0.50-TL-EP	1
13	BUZZER_C9900021864	U4	BUZ-SMD_BUZZER	1
14	26MHz	X1	CRYSTAL-SMD_4P-L3.2-W2.5-BL	1
15	4.7u	C6,C15	C0603	2
16	10nF	C7	C0603	1
17	0.1u	C11	C0603	1
18	0.01u	C14	C0603	1
19	HDR-F-2.54_1x2	H1,H2	HDR-F-2.54_1X2	2
20	10uH	L1	IND-SMD_L6.0-W6.0	1
21	22uH	L4	IND-SMD_L6.0-W6.0	1
22	1.1M	R1	R0603	1
23	887k	R2,R5,R7	R0603	3
24	300k	R3	R0603	1
25	1.2M	R4	R0603	1
26	1M	R6	R0603	1
27	BQ25570RGRR	U2	VQFN-20_L3.5-W3.5-P0.50-BL-EP2.0	1